Epiphyllum rhombum Pfeiff., Enum. Diagn. Cact.: 130. 1837 Epiphyllum rhombum Pfeiff., Enum. Diagn. Cact.: 130. 1837non Epiphyllum rhombeum Pfeiff., Enum. Diagn. Cact.: 130. 1837Taxon for this nameEpiphyllum rhombum Pfeiff.
